#include <avr/io.h>
#include <util/delay.h>
int main(void)
{
DDRB |= (1 << PORTB7); // PORTB7 direction = out
while (1)
{
// 1 pulse
PORTB |= (1 << PORTB7); // PORTB7 hi = LED L on
_delay_ms(500); // 0.5 sec
PORTB &= ~(1 << PORTB7); // PORTB7 hi = LED L off
// delay
_delay_ms(2000); // 2 sec
// 2 pulses
PORTB |= (1 << PORTB7);
_delay_ms(500);
PORTB &= ~(1 << PORTB7);
_delay_ms(500);
PORTB |= (1 << PORTB7);
_delay_ms(500);
PORTB &= ~(1 << PORTB7);
// delay
_delay_ms(2000);
}
}
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